Internal tooth span measuring device

Abstract

The invention belongs to the technical field of gear detection, and particularly relates to an internal tooth span measuring device which comprises a base, a fan-shaped groove, a linear sliding rail and a probe. When an inner gear ring with an even number of teeth is measured, the linear sliding rails on the two sides are moved to the middle part of the fan-shaped groove, so that the linear sliding rails on the two sides are kept on the same straight line, and the probes on the two sides are controlled to be in contact with the symmetrical tooth grooves on the two sides of the inner ring of the inner gear ring for measurement; when an inner gear ring with an odd number of teeth is measured, the linear sliding rail on one side is moved to the middle part of the fan-shaped groove, and the linear sliding rail on the other side is adjusted along the fan-shaped groove, so that the probe on the side is aligned with the tooth grooves of the inner ring of the inner gear ring, and the probes on the two sides are controlled to be in contact with the tooth grooves on the two sides of the inner ring of the inner gear ring for measurement. Therefore, the inner gear rings with different tooth numbers can be measured conveniently, and the difficulty of measuring the span of the inner teeth is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of gear detection, in particular to an internal gear span measuring device. Background Art

[0002] Internal tooth span measurement refers to measuring the distance between the internal gear tooth pitches. Internal tooth span measurement is an important detection method to ensure the manufacturing quality and transmission performance of gears. By measuring the internal tooth span, the geometric characteristics and manufacturing accuracy of the gears can be evaluated, thereby ensuring the stability and efficiency of the gears during the transmission process.

[0003] The measurement method of internal gear span measurement: First, the pitch circle of the gear needs to be measured, which is completed by meshing two round bars with two opposite directions of the gear and extending the contact points to form a circle; then, the point where three points intersect is determined as the center of the circle, which are the two points where the round bar contacts the gear and the point where the pitch circle contacts after extending through the gear contact point; finally, the two center points are connected, and the resulting line is the gear span.

[0004] When measuring the internal gear span, an internal gear span rod gauge is used. When measuring, the telescopic probes on both sides of the bottom are inserted into the gear ring, and the telescopic probes on both sides are respectively engaged with the two tooth grooves in opposite directions on both sides of the gear ring for measurement; however, since the number of teeth on the gear ring is odd, the tooth grooves of the gear ring are not symmetrical, which increases the difficulty of measuring the internal gear span.

[0005] To this end, the present invention provides an internal gear span measuring device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the internal gear span measuring device described in the present invention comprises a base; fan-shaped grooves are provided on both sides of the top surface of the base; the center of the fan-shaped grooves on both sides is consistent with the center of the base; an internal gear ring is placed on the top surface of the base; a measuring unit is arranged inside the fan-shaped groove; the measuring unit comprises a linear slide rail slidably arranged at the bottom of the fan-shaped groove; the linear slide rail can rotate and move around the center of the fan-shaped groove; a support column is fixed to the top surface of the slider of the linear slide rail; the top surface of the support column is aligned with the top surface of the base; a probe is arranged on the top surface of the support column; When measuring an internal gear ring with an even number of teeth, the linear guide rails on both sides are moved to the middle of the fan-shaped groove so that the linear guide rails on both sides remain on the same straight line, and the probes on both sides are controlled to contact the tooth grooves symmetrically on both sides of the inner ring of the internal gear ring for measurement; when measuring an internal gear ring with an odd number of teeth, the linear guide rail on one side is moved to the middle of the fan-shaped groove, and the linear guide rail on the other side is adjusted along the fan-shaped groove so that the probe on this side is aligned with the tooth groove of the inner ring of the internal gear ring, and the probes on both sides are controlled to contact the tooth grooves on both sides of the inner ring of the internal gear ring for measurement; this facilitates the measurement of internal gear rings with different numbers of teeth and reduces the difficulty of measuring the internal tooth span.

[0008] Preferably, an arc-shaped rack is fixed to the outer bottom of the fan-shaped groove; a No. 1 motor is fixed to the end of the linear slide rail away from the center of the base; a gear is fixed to the bottom of the output shaft of the No. 1 motor; the gear is meshed with the arc-shaped rack; and the movement and adjustment of the linear slide rail inside the fan-shaped groove are realized.

[0009] Preferably, an arc-shaped groove No. 1 is provided at the bottom of the inner circle of the fan-shaped groove; a arc-shaped groove No. 2 is provided in the middle of the ground of the fan-shaped groove; the center of the arc-shaped groove No. 1, the center of the arc-shaped groove No. 2 and the center of the fan-shaped groove are consistent; an arc-shaped slider No. 1 is fixedly connected to one end of the linear slide rail close to the center of the base; the arc-shaped slider No. 1 is slidably installed inside the arc-shaped groove No. 1; a arc-shaped slider No. 2 is fixedly connected to the middle of the bottom surface of the linear slide rail; the arc-shaped slider No. 2 is slidably installed inside the arc-shaped groove No. 2; thereby, the linear slide rail always moves around the center of the fan-shaped groove, and then the probe always maintains a vertical state with the inner ring tooth groove of the inner gear ring, thereby improving the measurement accuracy.

[0010] Preferably, a mounting seat is fixedly connected to the top surface of the support column; a threaded hole is provided in the middle of the mounting seat; a threaded adjustment rod is fixedly connected to one end of the probe close to the mounting seat; the threaded adjustment rod is threadedly matched with the threaded hole; a hexagonal socket is provided at one end of the threaded adjustment rod away from the probe; the distance between the probe and the mounting seat is controlled and adjusted, thereby facilitating the adjustment of the probe and improving the accuracy of the measurement.

[0011] Preferably, the middle outer ring of the probe is bolted with a positioning spring; the positioning spring includes a fixing ring bolted to the middle outer ring of the probe, and elastic sheets fixed on both sides of the fixing ring; so that the probe is kept in the middle of the tooth groove of the inner gear ring, thereby improving the measurement accuracy.

[0012] Preferably, sliding sleeves are fixed on both sides of the mounting seat; a push rod is slidably mounted inside the sliding sleeve; a bend is provided at one end of the push rod close to the probe, and the bending direction of the push rod is away from the side of the probe; a scale is provided on the top surface of one end of the push rod away from the probe; this facilitates the measurement of the tooth groove depth of the inner gear ring.

[0013] Preferably, a No. 1 linear slide groove is provided at each of the four corners of the base; a No. 1 linear slider is slidably installed inside the No. 1 linear slide groove; an electric push rod is fixedly connected to the bottom of the No. 1 linear slide groove; the piston rod end of the electric push rod is fixedly connected to the No. 1 linear slider; a No. 1 bracket is bolted to the top surface of the No. 1 linear slider; clamping rollers are rotatably installed on both sides of the No. 1 bracket; the outer ring of the clamping roller can be squeezed and contacted with the outer periphery of the inner gear ring; the inner gear ring is clamped and fixed on the top surface of the base, and at the same time, the center of the inner gear ring is aligned with the center of the base, thereby facilitating the operation of the staff and improving work efficiency.

[0014] Preferably, a No. 2 linear slide groove is provided on one side of the top surface of the base; the No. 2 linear slide groove is located between the fan-shaped grooves on both sides; a No. 1 screw rod is rotatably installed inside the No. 2 linear slide groove; a No. 2 motor is fixedly connected to the side of the base close to the No. 2 linear slide groove; the output shaft of the No. 2 motor is fixedly connected to the No. 1 screw rod; a No. 2 linear slider is slidably installed inside the No. 2 linear slide groove; the No. 2 linear slider is threadedly matched with the No. 1 screw rod; a shell is fixedly connected to the top surface of the No. 2 linear slider; a moving component is arranged inside the shell; a convex tooth positioning block is arranged on the top of the moving component; the convex tooth positioning block can mesh with the tooth groove of the inner gear ring.

[0015] Preferably, the moving assembly includes an elastic guide rod; the middle part of the elastic guide rod is fixedly connected to the middle part of the bottom surface of the shell through an insert; multiple sliding rods are fixedly connected to the inner ends of the shell; a No. 3 linear slider is slidably mounted on the outer rings of the multiple sliding rods on both sides; the two ends of the elastic guide rod are respectively rotatably connected to the No. 3 linear sliders on both sides; a No. 2 screw rod is rotatably mounted on the inner ends of the shell; the No. 2 screw rod is threadedly matched with the No. 3 linear slider; a rotating handle is rotatably mounted on the top side of the middle part of one side of the shell close to the center of the base; the rotating handle and the two No. 2 screw rods on both sides are connected by a synchronous belt mechanism; a top plate is slidably mounted on the top of the shell; The convex tooth positioning block is bolted to the top surface of the top plate; three No. 2 brackets are fixedly connected to the bottom surface of the top plate; concave wheels are arranged on both sides of the bottom surface of the No. 2 bracket; the concave wheels are slidably matched with the elastic guide rod; a No. 3 motor is fixedly connected to one side of a middle No. 2 bracket; the output shaft of the No. 3 motor is fixedly connected to a concave wheel at the bottom of a middle No. 2 bracket; adjustment grooves are provided on both sides of the bottom of the No. 2 brackets on both sides; adjustment blocks are slidably installed on the top of the adjustment grooves; the concave wheels at the bottom of the No. 2 brackets on both sides are rotatably connected to the adjustment blocks; a plurality of springs are fixedly connected between the adjustment blocks and the middle of the No. 2 bracket; it is convenient for the staff to fine-tune the rotation angle of the inner gear ring.

[0016] Preferably, through grooves are provided on both sides of the bottom of the shell; a plurality of arc-shaped calibration grooves are provided on the top surface of the base and on both sides of the No. 2 linear slide groove; the center of the arc-shaped calibration groove is consistent with the center of the base; and the staff can conveniently control the bending degree of the elastic guide rod accurately.

[0017] The beneficial effects of the present invention are as follows: 1. An internal gear span measuring device described in the present invention comprises a base, a fan-shaped groove, a linear slide rail and a probe; when measuring an internal gear ring with an even number of teeth, the linear slide rails on both sides are moved to the middle of the fan-shaped groove, so that the linear slide rails on both sides remain on the same straight line, and the probes on both sides are controlled to contact the tooth grooves symmetrically on both sides of the inner ring of the internal gear ring for measurement; when measuring an internal gear ring with an odd number of teeth, the linear slide rail on one side is moved to the middle of the fan-shaped groove, and the linear slide rail on the other side is adjusted along the fan-shaped groove, so that the probe on this side is aligned with the tooth grooves of the inner ring of the internal gear ring, and the probes on both sides are controlled to contact the tooth grooves on both sides of the inner ring of the internal gear ring for measurement; thereby facilitating the measurement of internal gear rings with different numbers of teeth and reducing the difficulty of measuring the internal gear span.

[0018] 2. An internal gear span measuring device described in the present invention comprises a No. 1 arc-shaped slide groove, a No. 2 arc-shaped slide groove, a No. 1 arc-shaped slider and a No. 2 arc-shaped slider; when the linear slide rail moves and adjusts inside the fan-shaped groove, the linear slide rail drives the No. 1 arc-shaped slider to slide along the No. 1 arc-shaped slide groove, and at the same time, the linear slide rail drives the No. 2 arc-shaped slider to slide along the No. 2 arc-shaped slide groove, so that the linear slide rail can only slide along the No. 1 arc-shaped slide groove and the No. 2 arc-shaped slide groove, so that the linear slide rail always moves around the center of the fan-shaped groove, and then the probe always maintains a vertical state with the inner ring tooth groove of the inner gear ring, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 is a three-dimensional diagram of the base in the present invention; Figure 4 is a three-dimensional diagram of the linear slide rail of the present invention; Figure 5 is a three-dimensional diagram of the mounting base of the present invention; Figure 6 is an exploded view of the mounting seat of the present invention; Figure 7 is a three-dimensional diagram of a No. 1 bracket in the present invention; Figure 8 is a three-dimensional diagram of the housing in the present invention; Fig. 9 is an exploded view of the housing in the present invention; Fig.10 is a three-dimensional diagram of the elastic guide rod in the present invention; Fig.11 is a three-dimensional diagram of a mobile assembly in the present invention; Fig.12 It is an exploded view of the No. 2 bracket in the present invention; In the figure: 1, base; 2, fan-shaped groove; 3, inner gear ring; 4, linear guide rail; 5, support column; 6, probe; 7, arc rack; 8, No. 1 motor; 9, gear; 10, No. 1 arc slide; 11, No. 2 arc slide; 12, No. 1 arc slider; 13, No. 2 arc slider; 14, mounting seat; 15, threaded hole; 16, threaded adjustment rod; 17, positioning spring; 18, sliding sleeve; 19, push rod; 20, No. 1 linear slide; 21, No. 1 linear slider; 22, electric push rod; 23 , bracket No. 1; 24, clamping roller; 25, linear slide No. 2; 26, lead screw No. 1; 27, motor No. 2; 28, linear slider No. 2; 29, housing; 30, convex tooth positioning block; 31, elastic guide rod; 32, slide rod; 33, linear slider No. 3; 34, lead screw No. 2; 35, handle; 36, synchronous belt mechanism; 37, top plate; 38, bracket No. 2; 39, concave wheel; 40, motor No. 3; 41, adjustment slot; 42, adjustment block; 43, spring; 44, arc calibration slot. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 4 As shown, an internal gear span measuring device described in an embodiment of the present invention comprises a base 1; fan-shaped grooves 2 are provided on both sides of the top surface of the base 1; the center of the fan-shaped grooves 2 on both sides is consistent with the center of the base 1; an internal gear ring 3 is placed on the top surface of the base 1; a measuring unit is arranged inside the fan-shaped groove 2; the measuring unit comprises a linear slide 4 slidably arranged at the bottom of the fan-shaped groove 2; the linear slide 4 can rotate and move around the center of the fan-shaped groove 2; a support column 5 is fixed to the top surface of the slider of the linear slide 4; the top surface of the support column 5 is aligned with the top surface of the base 1; a probe 6 is arranged on the top surface of the support column 5; During operation, the inner gear ring 3 to be measured is placed on the top surface of the base 1, so that the center of the inner gear ring 3 is aligned with the center of the base 1; the linear guide rail 4 on one side is controlled to move to the middle of the sector groove 2, so that the probe 6 on this side is aligned with the tooth groove of the inner ring of the inner gear ring 3, and the slider on the linear guide rail 4 on this side drives the support column 5 and the probe 6 to approach the inner gear ring 3, so that the end of the probe 6 contacts the middle of the tooth groove of the inner gear ring 3; then, the linear guide rail 4 on the other side is controlled to move along the sector groove 2, so that the probe 6 on this side is aligned with the tooth groove of the inner ring of the inner gear ring 3, and the slider on the linear guide rail 4 on this side drives the support column 5 and the probe 6 to approach the inner gear ring 3, so that the end of the probe 6 contacts the middle of the tooth groove of the inner gear ring 3, thereby measuring the inner tooth span of the inner gear ring 3; The linear guide rail 4 in this embodiment has a distance measurement function (such as using an encoder, a laser rangefinder, a magnetic sensor, a photoelectric sensor), which can accurately measure the sliding distance of the slider of the linear guide rail 4, that is, it can accurately measure the distance between the end of the probe 6 and the center of the base 1; When measuring the inner gear ring 3 with an even number of teeth, move the linear guide rails 4 on both sides to the middle of the fan-shaped groove 2 so that the linear guide rails 4 on both sides are kept on the same straight line, and control the probes 6 on both sides to contact the symmetrical tooth grooves on both sides of the inner ring of the inner gear ring 3 for measurement; When measuring the inner gear ring 3 with an odd number of teeth, the linear guide rail 4 on one side is moved to the middle of the sector groove 2, and the linear guide rail 4 on the other side is adjusted along the sector groove 2 so that the probe 6 on this side is aligned with the tooth groove of the inner ring of the inner gear ring 3, and the probes 6 on both sides are controlled to contact the tooth grooves on both sides of the inner ring of the inner gear ring 3 for measurement; This makes it easier to measure the internal gear ring 3 with different numbers of teeth, and reduces the difficulty of measuring the internal gear span.

[0023] like Figures 1 to 4 As shown, an arc-shaped rack 7 is fixedly connected to the outer bottom of the fan-shaped groove 2; a No. 1 motor 8 is fixedly connected to the end of the linear guide rail 4 away from the center of the base 1; a gear 9 is fixedly connected to the bottom of the output shaft of the No. 1 motor 8; the gear 9 is meshed with the arc-shaped rack 7; During operation, the first motor 8 drives the gear 9 to rotate, and the gear 9 is meshed with the arc rack 7 to drive the linear guide rail 4 to move inside the fan-shaped groove 2, thereby realizing the movement and adjustment of the linear guide rail 4 inside the fan-shaped groove 2.

[0024] like Figures 1 to 4 As shown, a first arc-shaped slide groove 10 is provided at the bottom of the inner circle of the fan-shaped groove 2; a second arc-shaped slide groove 11 is provided in the middle of the ground of the fan-shaped groove 2; the center of the first arc-shaped slide groove 10, the center of the second arc-shaped slide groove 11 and the center of the fan-shaped groove 2 are consistent; a first arc-shaped slider 12 is fixedly connected to one end of the linear guide rail 4 close to the center of the base 1; the first arc-shaped slider 12 is slidably installed inside the first arc-shaped slide groove 10; a second arc-shaped slider 13 is fixedly connected to the middle of the bottom surface of the linear guide rail 4; the second arc-shaped slider 13 is slidably installed inside the second arc-shaped slide groove 11; During operation, when the linear slide 4 moves and adjusts inside the fan-shaped groove 2, the linear slide 4 drives the No. 1 arc-shaped slider 12 to slide along the No. 1 arc-shaped groove 10. At the same time, the linear slide 4 drives the No. 2 arc-shaped slider 13 to slide along the No. 2 arc-shaped groove 11, so that the linear slide 4 can only slide along the No. 1 arc-shaped groove 10 and the No. 2 arc-shaped groove 11, so that the linear slide 4 always moves around the center of the fan-shaped groove 2, and then the probe 6 always maintains a vertical state with the inner ring tooth groove of the inner gear ring 3, thereby improving the measurement accuracy.

[0025] like Figures 4 to 6 As shown, a mounting seat 14 is fixedly connected to the top surface of the support column 5; a threaded hole 15 is provided in the middle of the mounting seat 14; a threaded adjustment rod 16 is fixedly connected to one end of the probe 6 close to the mounting seat 14; the threaded adjustment rod 16 is threadedly matched with the threaded hole 15; and a hexagon socket is provided at one end of the threaded adjustment rod 16 away from the probe 6; During operation, a hexagonal wrench is used to cooperate with the hexagonal groove of the threaded adjustment rod 16 to drive the threaded adjustment rod 16 to rotate inside the threaded hole 15 of the mounting seat 14 to control and adjust the distance between the probe 6 and the mounting seat 14, thereby facilitating the adjustment of the probe 6 and improving the accuracy of the measurement.

[0026] like Figures 4 to 6 As shown, a positioning spring piece 17 is bolted to the middle outer ring of the probe 6; the positioning spring piece 17 includes a fixing ring bolted to the middle outer ring of the probe 6, and elastic sheets are fixedly connected to both sides of the fixing ring; During operation, the end of the probe 6 is inserted into the tooth groove of the inner gear ring 3, so that the elastic sheets on both sides of the positioning spring sheet 17 are in sliding contact with the side walls of the tooth groove of the inner gear ring 3, so that the probe 6 is kept in the middle of the tooth groove of the inner gear ring 3, thereby improving the measurement accuracy.

[0027] like Figures 4 to 6 As shown, a sliding sleeve 18 is fixedly connected to both sides of the mounting seat 14; a push rod 19 is slidably mounted inside the sliding sleeve 18; a bend is arranged at one end of the push rod 19 close to the probe 6, and the bending direction of the push rod 19 is away from the side of the probe 6; a scale is arranged on the top surface of one end of the push rod 19 away from the probe 6; During operation, when no measurement is performed, the push rod 19 is pushed to slide along the sleeve 18 toward the probe 6, so that the bending part of the push rod 19 is aligned with the end of the probe 6, and at this time, the other end of the push rod 19 is aligned with the end of the sleeve 18; When measuring, when the probe 6 is extended into the tooth groove of the inner gear ring 3, the bent part of the push rod 19 contacts the teeth of the inner gear ring 3, and the push rod 19 slides along the sliding sleeve 18, so that the other end of the push rod 19 slides out from the sliding sleeve 18. According to the scale on the push rod 19, the length of the push rod 19 sliding out is the tooth groove depth of the inner gear ring 3, thereby facilitating the measurement of the tooth groove depth of the inner gear ring 3.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, the four corners of the base 1 are each provided with a No. 1 linear slide 20; a No. 1 linear slider 21 is slidably installed inside the No. 1 linear slide 20; an electric push rod 22 is fixedly connected to the bottom of the No. 1 linear slide 20; the piston rod end of the electric push rod 22 is fixedly connected to the No. 1 linear slider 21; a No. 1 bracket 23 is bolted to the top surface of the No. 1 linear slider 21; clamping rollers 24 are rotatably installed on both sides of the No. 1 bracket 23; the outer ring of the clamping roller 24 can be pressed and contacted with the outer periphery of the inner gear ring 3; During operation, after the inner gear ring 3 to be measured is placed on the top surface of the base 1, the four electric push rods 22 at the four corners of the base 1 simultaneously drive the No. 1 linear slider 21 to slide along the No. 1 linear slide groove 20, driving the No. 1 bracket 23 to approach the outer ring of the inner gear ring 3, and multiple clamping rollers 24 simultaneously contact and squeeze the outer ring of the inner gear ring 3, clamping the inner gear ring 3 to the top surface of the base 1, and at the same time, aligning the center of the inner gear ring 3 with the center of the base 1, thereby facilitating the operation of the staff and improving work efficiency.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, a No. 2 linear slide groove 25 is provided on one side of the top surface of the base 1; the No. 2 linear slide groove 25 is located between the fan-shaped grooves 2 on both sides; a No. 1 screw rod 26 is rotatably installed inside the No. 2 linear slide groove 25; a No. 2 motor 27 is fixedly connected to the side of the base 1 close to the No. 2 linear slide groove 25; the output shaft of the No. 2 motor 27 is fixedly connected to the No. 1 screw rod 26; a No. 2 linear slider 28 is slidably installed inside the No. 2 linear slide groove 25; the No. 2 linear slider 28 is threadedly matched with the No. 1 screw rod 26; a shell 29 is fixedly connected to the top surface of the No. 2 linear slider 28; a moving component is arranged inside the shell 29; a convex tooth positioning block 30 is arranged on the top of the moving component; the convex tooth positioning block 30 can mesh with the tooth groove of the inner gear ring 3; The moving assembly includes an elastic guide rod 31; the middle part of the elastic guide rod 31 is fixedly connected to the middle part of the bottom surface of the shell 29 through an insert; multiple slide rods 32 are fixedly connected to the inner ends of the shell 29; the outer rings of the multiple slide rods 32 on both sides are slidably mounted with a No. 3 linear slider 33; the two ends of the elastic guide rod 31 are respectively rotatably connected with the No. 3 linear sliders 33 on both sides; the two ends of the inner ends of the shell 29 are rotatably mounted with a No. 2 screw rod 34; the No. 2 screw rod 34 is threadedly matched with the No. 3 linear slider 33; a rotating handle 35 is rotatably mounted on the top side of the middle part of a side of the shell 29 close to the center of the base 1; the rotating handle 35 and the two No. 2 screw rods 34 on both sides are connected by a synchronous belt mechanism 36; the top of the shell 29 is slidably mounted with a top plate 37; the convex tooth positioning block 30 is bolted to the top surface of the top plate 37; three No. 2 brackets 38 are fixedly connected to the bottom surface of the top plate 37; cam wheels 39 are arranged on both sides of the bottom surface of the No. 2 bracket 38; the cam wheels 39 are slidably matched with the elastic guide rod 31; a No. 3 motor 40 is fixedly connected to one side of the No. 2 bracket 38 in the middle; the output shaft of the No. 3 motor 40 is fixedly connected to a cam wheel 39 at the bottom of the No. 2 bracket 38 in the middle; adjustment grooves 41 are provided on both sides of the bottom of the No. 2 bracket 38 on both sides; an adjustment block 42 is slidably installed on the top of the adjustment groove 41; the cam wheels 39 at the bottom of the No. 2 bracket 38 on both sides are rotatably connected to the adjustment block 42; a plurality of springs 43 are fixedly connected between the adjustment block 42 and the middle of the No. 2 bracket 38; When working, when the multiple clamping rollers 24 fix the inner gear ring 3 on the top surface of the base 1, the second motor 27 drives the first screw rod 26 to rotate, drives the second linear slider 28 to slide along the second linear slide groove 25, and drives the convex tooth positioning block 30 to approach and insert into the tooth groove of the inner gear ring 3; The handle 35 is rotated, and the second screw rods 34 on both sides are driven to rotate synchronously through the transmission of the synchronous belt mechanism 36, and the third linear slider 33 is driven to slide along the slide rod 32, and the two ends of the elastic guide rod 31 are driven to bend toward the middle of the base 1, so that the curvature of the elastic guide rod 31 is consistent with the curvature of the inner gear ring 3; The third motor 40 drives the concave wheel 39 at the bottom of the second bracket 38 in the middle to rotate, drives the top plate 37 to slide along the elastic guide rod 31, drives the convex tooth positioning block 30 to push the inner gear ring 3 to rotate, and adjusts the angle of the inner gear ring 3 so that the tooth groove of the inner ring of the inner gear ring 3 is aligned with the probe 6 in the middle of the fan-shaped groove 2; thereby, it is convenient for the staff to fine-tune the rotation angle of the inner gear ring 3; Through the elastic force of the spring 43, the adjustment block 42 and the cam 39 on the No. 2 bracket 38 on both sides are brought close to each other along the adjustment groove 41, so that the cams 39 on both sides are always clamped on both sides of the elastic guide rod 31; thereby, when the elastic guide rod 31 is bent, the cams 39 on both sides can still firmly clamp the elastic guide rod 31, thereby improving the stability when driving the inner gear ring 3 to rotate.

[0030] like Figures 1 to 3 As shown, through grooves are provided on both sides of the bottom of the housing 29; a plurality of arc-shaped calibration grooves 44 are provided on the top surface of the base 1 and on both sides of the second linear slide groove 25; the center of the arc-shaped calibration groove 44 is consistent with the center of the base 1; During operation, when the elastic guide rod 31 is controlled to bend, a reference comparison is performed through the arc-shaped calibration groove 44 on the top surface of the base 1, so that the staff can accurately control the bending degree of the elastic guide rod 31.

[0031] Working principle: When not measuring, push the push rod 19 to slide along the sleeve 18 toward the probe 6, so that the bending part of the push rod 19 is aligned with the end of the probe 6, and at this time, the other end of the push rod 19 is aligned with the end of the sleeve 18; control the linear guide rail 4 on one side to move to the middle of the fan-shaped groove 2; The inner gear ring 3 to be measured is placed on the top surface of the base 1. The four electric push rods 22 at the four corners of the base 1 simultaneously drive the No. 1 linear slider 21 to slide along the No. 1 linear slide groove 20, driving the No. 1 bracket 23 to approach the outer ring of the inner gear ring 3. Multiple clamping rollers 24 simultaneously contact and squeeze the outer ring of the inner gear ring 3, clamping and fixing the inner gear ring 3 on the top surface of the base 1, and at the same time, aligning the center of the inner gear ring 3 with the center of the base 1; The No. 2 motor 27 drives the No. 1 screw 26 to rotate, drives the No. 2 linear slider 28 to slide along the No. 2 linear slide groove 25, and drives the convex tooth positioning block 30 to approach and insert into the tooth groove of the inner gear ring 3; the rotating handle 35 is rotated, and the No. 2 screws 34 on both sides are driven to rotate synchronously through the transmission of the synchronous belt mechanism 36, and the No. 3 linear slider 33 is driven to slide along the slide rod 32, and the two ends of the elastic guide rod 31 are driven to bend toward the middle of the base 1, so that the curvature of the elastic guide rod 31 is consistent with the curvature of the inner gear ring 3; the No. 3 motor 40 drives the concave wheel 39 at the bottom of a No. 2 bracket 38 in the middle to rotate, drives the top plate 37 to slide along the elastic guide rod 31, drives the convex tooth positioning block 30 to push the inner gear ring 3 to rotate, and adjusts the angle of the inner gear ring 3 so that the tooth groove of the inner ring of the inner gear ring 3 is aligned with the probe 6 in the middle of the fan-shaped groove 2; The first motor 8 drives the gear 9 to rotate, and the gear 9 is meshed with the arc rack 7 to drive the linear guide 4 to move inside the fan-shaped groove 2. The linear guide 4 drives the first arc slider 12 to slide along the first arc slide groove 10. At the same time, the linear guide 4 drives the second arc slider 13 to slide along the second arc slide groove 11, so that the linear guide 4 can only slide along the first arc slide groove 10 and the second arc slide groove 11, so that the linear guide 4 always moves around the center of the fan-shaped groove 2, so that the probe 6 on this side is aligned with the tooth groove of the inner ring of the inner gear ring 3; The slider on the linear slide rail 4 drives the support column 5 and the probe 6 to approach the inner gear ring 3, so that the end of the probe 6 contacts the middle of the tooth groove of the inner gear ring 3; the end of the probe 6 is inserted into the tooth groove of the inner gear ring 3, so that the elastic sheets on both sides of the positioning spring sheet 17 are in sliding contact with the side walls of the tooth groove of the inner gear ring 3, so that the probe 6 is kept in the middle of the tooth groove of the inner gear ring 3, thereby improving the accuracy of measurement; the bending part of the push rod 19 contacts the teeth of the inner gear ring 3, and the push rod 19 slides along the sliding sleeve 18, so that the other end of the push rod 19 slides out of the sliding sleeve 18, and the sliding length of the push rod 19 is the tooth groove depth of the inner gear ring 3 in combination with the scale on the push rod 19, which is convenient for measuring the tooth groove depth of the inner gear ring 3; When measuring the inner gear ring 3 with an even number of teeth, move the linear guide rails 4 on both sides to the middle of the fan-shaped groove 2 so that the linear guide rails 4 on both sides are kept on the same straight line, and control the probes 6 on both sides to contact the symmetrical tooth grooves on both sides of the inner ring of the inner gear ring 3 for measurement; When measuring the inner gear ring 3 with an odd number of teeth, the linear slide 4 on one side is moved to the middle of the fan-shaped groove 2, and the linear slide 4 on the other side is adjusted along the fan-shaped groove 2 so that the probe 6 on this side is aligned with the tooth grooves of the inner ring of the inner gear ring 3, and the probes 6 on both sides are controlled to contact the tooth grooves on both sides of the inner ring of the inner ring 3 for measurement; thereby facilitating the measurement of the inner gear ring 3 with different numbers of teeth and reducing the difficulty of measuring the internal tooth span.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An internal tooth span measuring device, characterized in that: The invention comprises a base (1); fan-shaped grooves (2) are provided on both sides of the top surface of the base (1); the centers of the fan-shaped grooves (2) on both sides are consistent with the center of the base (1); an inner gear ring (3) is placed on the top surface of the base (1); a measuring unit is arranged inside the fan-shaped groove (2); the measuring unit comprises a linear slide rail (4) slidably arranged at the bottom of the fan-shaped groove (2); the linear slide rail (4) can rotate and move around the center of the fan-shaped groove (2); a support column (5) is fixed on the top surface of the slider of the linear slide rail (4); the top surface of the support column (5) is aligned with the top surface of the base (1); and a probe (6) is arranged on the top surface of the support column (5); A No. 2 linear slide groove (25) is provided on one side of the top surface of the base (1); the No. 2 linear slide groove (25) is located between the fan-shaped grooves (2) on both sides; a No. 1 screw rod (26) is rotatably installed inside the No. 2 linear slide groove (25); a No. 2 motor (27) is fixedly connected to the side of the base (1) close to the No. 2 linear slide groove (25); the output shaft of the No. 2 motor (27) is fixedly connected to the No. 1 screw rod (26); a No. 2 linear slider (28) is slidably installed inside the No. 2 linear slide groove (25); the No. 2 linear slider (28) is threadedly matched with the No. 1 screw rod (26); a shell (29) is fixedly connected to the top surface of the No. 2 linear slider (28); a moving component is arranged inside the shell (29); a convex tooth positioning block (30) is arranged on the top of the moving component; the convex tooth positioning block (30) can mesh with the tooth groove of the inner gear ring (3); The moving assembly comprises an elastic guide rod (31); the middle part of the elastic guide rod (31) is fixedly connected to the middle part of the bottom surface of the shell (29) through an insert; a plurality of slide rods (32) are fixedly connected to both ends of the shell (29); a third linear slider (33) is slidably mounted on the outer rings of the plurality of slide rods (32) on both sides; both ends of the elastic guide rod (31) are rotatably connected to the third linear sliders (33) on both sides; a second screw rod (34) is rotatably mounted on both ends of the shell (29); the second screw rod (34) is threadedly matched with the third linear slider (33); a rotating handle (35) is rotatably mounted on the top side of the middle part of one side of the shell (29) close to the center of the base (1); the rotating handle (35) and the two second screw rods (34) on both sides are transmission-connected through a synchronous belt mechanism (36); a top plate (37) is slidably mounted on the top of the shell (29). ; The convex tooth positioning block (30) is bolted to the top surface of the top plate (37); three No. 2 brackets (38) are fixedly connected to the bottom surface of the top plate (37); concave wheels (39) are arranged on both sides of the bottom surface of the No. 2 bracket (38); the concave wheels (39) are slidably matched with the elastic guide rod (31); a No. 3 motor (40) is fixedly connected to one side of the middle No. 2 bracket (38); the output shaft of the No. 3 motor (40) is fixedly connected to a concave wheel (39) at the bottom of the middle No. 2 bracket (38); adjustment grooves (41) are provided on both sides of the bottom of the No. 2 bracket (38) on both sides; an adjustment block (42) is slidably installed on the top of the adjustment groove (41); the concave wheels (39) at the bottom of the No. 2 bracket (38) on both sides are rotatably connected to the adjustment block (42); a plurality of springs (43) are fixedly connected between the adjustment block (42) and the middle of the No. 2 bracket (38).

2. The internal gear span measuring device according to claim 1, characterized in that: An arc-shaped rack (7) is fixedly connected to the outer bottom of the fan-shaped groove (2); a first motor (8) is fixedly connected to one end of the linear guide rail (4) away from the center of the base (1); a gear (9) is fixedly connected to the bottom of the output shaft of the first motor (8); and the gear (9) is meshed with the arc-shaped rack (7).

3. The internal gear span measuring device according to claim 1, characterized in that: The inner bottom of the fan-shaped groove (2) is provided with a first arc-shaped slide groove (10); the middle of the ground of the fan-shaped groove (2) is provided with a second arc-shaped slide groove (11); the center of the first arc-shaped slide groove (10), the center of the second arc-shaped slide groove (11) and the center of the fan-shaped groove (2) are consistent; the end of the linear slide rail (4) close to the center of the base (1) is fixedly connected to a first arc-shaped slider (12); the first arc-shaped slider (12) is slidably mounted inside the first arc-shaped slide groove (10); the middle of the bottom surface of the linear slide rail (4) is fixedly connected to a second arc-shaped slider (13); the second arc-shaped slider (13) is slidably mounted inside the second arc-shaped slide groove (11).

4. The internal gear span measuring device according to claim 1, characterized in that: A mounting seat (14) is fixedly connected to the top surface of the support column (5); a threaded hole (15) is provided in the middle of the mounting seat (14); a threaded adjustment rod (16) is fixedly connected to one end of the probe (6) close to the mounting seat (14); the threaded adjustment rod (16) is threadably matched with the threaded hole (15); and a hexagonal socket is provided at one end of the threaded adjustment rod (16) away from the probe (6).

5. The internal gear span measuring device according to claim 4, characterized in that: A positioning spring piece (17) is bolted to the middle outer ring of the probe (6); the positioning spring piece (17) comprises a fixing ring bolted to the middle outer ring of the probe (6), and elastic pieces are fixedly connected to both sides of the fixing ring.

6. The internal gear span measuring device according to claim 4, characterized in that: Slide sleeves (18) are fixedly connected to both sides of the mounting seat (14); a push rod (19) is slidably mounted inside the slide sleeve (18); a bend is arranged at one end of the push rod (19) close to the probe (6), and the bending direction of the push rod (19) is away from the probe (6); and a scale is arranged on the top surface of one end of the push rod (19) away from the probe (6).

7. The internal gear span measuring device according to claim 1, characterized in that: The base (1) is provided with a No. 1 linear slide groove (20) at each of the four corners; a No. 1 linear slider (21) is slidably mounted inside the No. 1 linear slide groove (20); an electric push rod (22) is fixedly connected to the bottom of the No. 1 linear slide groove (20); the piston rod end of the electric push rod (22) is fixedly connected to the No. 1 linear slider (21); a No. 1 bracket (23) is bolted to the top surface of the No. 1 linear slider (21); clamping rollers (24) are rotatably mounted on both sides of the No. 1 bracket (23); the outer ring of the clamping roller (24) can be in extrusion contact with the outer periphery of the inner gear ring (3).

8. The internal gear span measuring device according to claim 1, characterized in that: Through grooves are provided on both sides of the bottom of the housing (29); a plurality of arc-shaped calibration grooves (44) are provided on the top surface of the base (1) and on both sides of the second linear slide groove (25); the center of the arc-shaped calibration groove (44) is consistent with the center of the base (1).

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